The best things that you can do in any relationship rescue is to aim at being honest and accept one another. Doing both of these may be difficult if you aren't willing to accept the fact that much of the blame in the difficulties of the relationship is shared. Own up to your own flaws and accept that there may be some truth to the complaints that your significant other has of you. If you want the other party in your relationship to change things you must realize there are probably things that you need to change as well. If you want them to keep an open mind about things that you wish for them to work on then you must do the same.
True love will require compromise many times. You must be able to bend your will and give up some things to make the relationship work. If there is going to be a relationship rescue taking place. Both parties need to take a hard look at themselves and see what things they need to give up and work on to be more compatible.
The largest part of any relationship rescue is to change your perspective. For many people perception is a reality, but it may be a false reality. Something may seem like the worst situation in the world but then, after a change in perspective, it may not seem all that bad at all. People have a way of blowing things out of proportion. In relationships this is especially true. Quite a bit of marriage counseling deals with this bit of relationship management.
Look closely at the situations from different angles. Your spouse/partner may seem like they work too much but could it be worse? Yes, they could be hopelessly unemployed and struggling to find work or, worse yet, a bum. Also ask why certain things are being done instead of jumping to conclusions.
Talk through things and when things are settled, drop them and move on. Much of the problems that relationships face is due to the fact that there is someone in the relationship, or maybe both in the relationship, who hold on to grudges. Don't let that happen. If there were things that happened in the past that have been dealt with, then let them go. When you do have discussions or arguments don't bring up the past. Deal with the present. Don't don't fight battles more than once.